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30 lines
2.1 KiB
Markdown
30 lines
2.1 KiB
Markdown
# FAQ
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**Q: Does Atlantis affect Terraform [remote state](https://developer.hashicorp.com/terraform/language/state/remote)?**
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A: No. Atlantis does not interfere with Terraform remote state in any way. Under the hood, Atlantis is simply executing `terraform plan` and `terraform apply`.
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**Q: How does Atlantis locking interact with Terraform [locking](https://developer.hashicorp.com/terraform/language/state/locking)?**
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A: Atlantis provides locking of pull requests that prevents concurrent modification of the same infrastructure (Terraform project) whereas Terraform locking only prevents two concurrent `terraform apply`'s from happening.
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Terraform locking can be used alongside Atlantis locking since Atlantis is simply executing terraform commands.
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**Q: How to run Atlantis in high availability mode? Does it need to be?**
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A: Atlantis server can easily be run under the supervision of a init system like `upstart` or `systemd` to make sure `atlantis server` is always running.
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Atlantis, by default, stores all locking and Terraform plans locally on disk under the `--data-dir` directory (defaults to `~/.atlantis`). If multiple Atlantis hosts are run by utilizing a shared redis backend, then it's important that the `data-dir` is using a shared filesystem between hosts.
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However, if you were to lose the data, all you would need to do is run `atlantis plan` again on the pull requests that are open. If someone tries to run `atlantis apply` after the data has been lost then they will get an error back, so they will have to re-plan anyway.
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**Q: How to add SSL to Atlantis server?**
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A: First, you'll need to get a public/private key pair to serve over SSL.
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These need to be in a directory accessible by Atlantis. Then start `atlantis server` with the `--ssl-cert-file` and `--ssl-key-file` flags.
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See `atlantis server --help` for more information.
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**Q: How can I get Atlantis up and running on AWS?**
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A: There is [terraform-aws-atlantis](https://github.com/terraform-aws-modules/terraform-aws-atlantis) project where complete Terraform configurations for running Atlantis on AWS Fargate are hosted. Tested and maintained.
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